function C = wv_rows(M)
% WV_ROWS  Matrix to a cell array of rows, for jsonencode.
%
% jsonencode([1 2 3]) is [1,2,3], not [[1,2,3]], so a matrix with a single row
% arrives on the JavaScript side with the wrong nesting.  Encoding a cell array
% of rows instead always gives an array of arrays.
n = size(M, 1);
C = cell(1, n);
for i = 1:n
    C{i} = M(i, :);
end
end